Refraction and Light Behavior Concepts

This video tutorial by Mr. Anderson covers the refraction of light, explaining how light bends when it passes through different media. It introduces Snell's Law, which quantifies refraction, and uses a marching band analogy to illustrate the concept. Practical examples with prisms and spheres are provided, and Snell's Law is applied to solve refraction problems. The video also discusses critical angles and total internal reflection.

What happens to light when it passes from air into glass at an angle?

• It bends away from the normal.

• It reflects back into the air.

• It bends towards the normal.

• It continues in a straight line.

Which law helps us calculate the angle of refraction?

• Newton's Law

• Snell's Law

• Ohm's Law

• Hooke's Law

What is the critical angle?

• The angle at which light bends the most.

• The angle at which light is completely absorbed.

• The angle at which light passes straight through.

• The angle at which light is completely reflected.

In the marching band analogy, what happens when the band enters a slower medium?

• The band bends away from the normal.

• The band bends towards the normal.

• The band maintains its speed.

• The band speeds up.

What happens to the angle of refraction when light moves from a slower to a faster medium?

• It becomes zero.

• It increases.

• It remains the same.

• It decreases.

How does Snell's Law relate to the speed of light in different media?

• It shows that speed is irrelevant.

• It relates speed to the index of refraction.

• It relates speed to the angle of incidence.

• It shows that speed is constant.

What is the index of refraction of air approximately?

• 0.5

• 2.0

• 1.0

• 1.5

If light enters a medium at 60° and refracts at 20°, what can be inferred about the medium?

• The medium is a vacuum.

• The medium is more dense.

• The medium is less dense.

• The medium is the same density as air.

What happens to light when it hits a surface at the critical angle?

• It is reflected back into the original medium.

• It is absorbed by the surface.

• It is refracted into the new medium.

• It passes straight through without bending.

What is total internal reflection?

• When all light is reflected back into the original medium.

• When all light is absorbed by a medium.

• When light passes through without any reflection.

• When all light is refracted into a new medium.